I had an open total proctocolectomy and my surgeon would not discharge any of his patients until they had walked a charted mile in the hospital. We were also sent home with instructions to keep walking. Your husband needs to balance the pain/activity within reason. I don't think it's healthy to sit or lie around all day but he also shouldn't be pushing to fatigue. Some pain is a normal part of recovery.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free